CN205273564U - Child stroller - Google Patents

Abstract

<b>The utility model relates to</b><b> a child stroller. The children's stroller includes a vehicle frame, the vehicle frame includes a front wheel bracket, a rear wheel bracket, a seat bar, a push rod and a support rod, the front wheel bracket and the rear wheel bracket intersect to form a first rotating joint, and the push rod includes an upper push rod and a push rod. Lower push rod, the lower part of the lower push rod is connected to the first rotating joint, the upper part of the lower push rod intersects with the upper push rod to form a second rotating joint, the upper part of the support rod is connected to the upper push rod in rotation, and the lower part of the support rod is connected to the rear wheel The bracket is rotatably connected, the front part of the seat bar is rotatably connected with the front wheel bracket, and the rear part of the seat bar is rotatably connected with the support bar. The upper push rod and the lower push rod connected by rotation are used to form the push rod. After the upper push rod is unlocked, it rotates around the second rotating joint to drive the lower push rod, support rod, front wheel bracket, rear wheel bracket and seat rod to move closer to each other. Folding, one step to realize the folding of the whole stroller, less folding steps, simple and convenient. </b>

Description

stroller

technical field

The utility model relates to a stroller for children.

Background technique

At present, for the convenience of storage and transportation, children's strollers are often designed in a foldable style. However, the existing children's stroller is folded by pushing the push rod, and then other parts of the frame are folded. The folding steps are cumbersome, and basically the function of one-step folding cannot be realized.

Utility model content

The technical problem to be solved by the utility model is to provide a child stroller with simple structure and convenient folding.

In order to solve the above-mentioned technical problems, a technical solution adopted by the utility model is: a kind of children's stroller, including a frame with unfolded state and folded state, a front wheel arranged at the front under the frame, a front wheel arranged at the bottom of the frame Rear wheels at the rear and a locking device to lock the frame in deployment. The vehicle frame includes a front wheel bracket whose lower part is connected to the front wheel, a rear wheel bracket whose lower part is connected to the rear wheel, a seat bar, a push rod and a support rod, the intersection of the front wheel bracket and the rear wheel bracket forms a first rotating joint, The front wheel bracket and the rear wheel bracket can respectively rotate around the first rotation joint, the push rod includes an upper push rod and a lower push rod, and the lower part of the lower push rod is connected to the first rotation joint in rotation, so The upper part of the lower push rod intersects with the upper push rod to form a second rotating joint, the upper part of the support rod is rotatably connected with the upper push rod, the lower part of the support rod is rotatably connected with the rear wheel bracket, and the front part of the seat rod is connected with the front wheel The bracket is rotatably connected, the rear part of the seat rod is rotatably connected with the support rod, and the locking device is installed at the second rotating joint and can lock the upper push rod and the lower push rod to each other. When the vehicle frame is in the unfolded state, the front The wheel support and the rear wheel support support each other, the upper push rod and the lower push rod extend away from the front wheel, the locking device locks the upper push rod and the lower push rod, and the support rod stands obliquely when pushing down Between the rod and the rear wheel bracket, the seat rod is unfolded between the front wheel bracket and the support rod; when the vehicle frame is in the folded state, the locking device is unlocked, and the front wheel bracket, rear wheel bracket, upper push rod, The lower push rod, support bar and seat post all fold together towards each other.

Preferably, a torsion spring is installed at the second rotation joint formed by the intersection of the upper push rod and the lower push rod. When the locking device is unlocked, the upper push rod is driven by the torsion spring to turn forward around the second rotation joint. .

Preferably, the baby stroller also includes an unlocking mechanism, the unlocking mechanism includes a traction cable and an unlocking belt, the traction cable is installed inside the vehicle frame, and the upper end of the traction cable extends out of the vehicle frame and the locking device Connected, the lower end of the traction rope extends out of the vehicle frame and is connected with the unlocking belt, the unlocking belt is located between the rear wheel brackets, and the lifting unlocking belt can unlock the locking device through the traction rope.

Specifically, the upper end of the front wheel bracket intersects with the upper end of the rear wheel bracket to form a first rotation joint, and the rotation connection between the seat post and the front wheel bracket is lower than the first rotation joint.

Specifically, the upper push rod is formed by the fixed intersection of the upper rod and the lower rod, the second rotation joint formed by the lower push rod and the upper push rod is located at the intersection of the upper rod and the lower rod, and the support rod and the lower rod The lower part of the swivel connection.

Further, when the vehicle frame is in the unfolded state, the rotation connection between the support rod and the down rod is lower than the second rotation joint, and the connection between the support rod and the rear wheel bracket is lower than the connection between the support rod and the seat rod place.

Specifically, the rear wheel bracket, the lower push rod, the lower rod and the support rod form a four-bar linkage mechanism.

Specifically, when the vehicle frame is in the unfolded state, the lower push rod and the upper rod are substantially on the same straight line, and the lower rod and the support rod are substantially on the same straight line.

The orientation words such as front, rear, left, right, up, and down mentioned above are defined in the normal use orientation of the stroller.

The scope of the present utility model is not limited to technical solutions formed by a specific combination of the above technical features, but also covers other technical solutions formed by any combination of the above technical features or equivalent features. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art: the upper push rod and the lower push rod connected by rotation are used to form the push rod, and after the upper push rod is unlocked, it rotates around the second rotating joint to drive the push down Rods, support rods, front wheel brackets, rear wheel brackets, and seat rods are folded together to realize the folding of the entire stroller in one step. Folding steps are few and simple and convenient; a torsion spring is installed at the second rotating joint to make the push rod After unlocking with the lower push rod, the upper push rod can be turned forward autonomously under the drive of the torsion spring. Carry and fold, the folding of the stroller is simpler and more convenient.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram when the children's stroller of the present invention is in the unfolded state;

Fig. 2 is a side view of the utility model when the children's stroller is in an unfolded state;

Fig. 3 is a side view of the utility model when the children's stroller is in a half-folded state;

Fig. 4 is a side view of the utility model when the children's stroller is in a folded state;

Among them: 1. Upper push rod; 2. Lower push rod; 3. Front wheel bracket; 4. Rear wheel bracket; 5. Support rod; 6. Seat rod; 7. First rotating joint; 8. Second rotating joint; 9, front wheel; 10, rear wheel; 11, upper rod; 12, lower rod; 13, traction rope; 14, unlocking belt.

detailed description

As shown in Figures 1 to 4, a children's stroller described in the present utility model includes a frame with an unfolded state and a folded state, a front wheel 9 arranged at the front of the bottom of the frame, and a rear wheel 9 arranged at the bottom of the frame. The rear wheel 10 of the part and the locking device for locking the vehicle frame in unfolding.

Described vehicle frame comprises the front wheel support 3 that bottom is connected with front wheel 9, the rear wheel support 4 that bottom is connected with rear wheel 10, seat bar 6, push rod and support bar 5. The upper end of the front wheel bracket 3 intersects with the upper end of the rear wheel bracket 4 to form a first pivot joint 7 , and the front wheel bracket 3 and the rear wheel bracket 4 can rotate around the first pivot joint 7 respectively. The push rod includes an upper push rod 1 and a lower push rod 2, the lower part of the lower push rod 2 is connected to the first rotary joint 7, and the upper part of the lower push rod 2 intersects with the upper push rod 1 to form a second Rotary joint 8, the upper part of the support rod 5 is connected with the upper push rod 1 in rotation. In this example, the upper push rod 1 is formed by the fixed intersection of the upper rod 11 and the lower rod 12, and the second rotary joint 8 formed by the lower push rod 2 and the upper push rod 1 is located at the joint between the upper rod 11 and the lower rod 12. At the intersection, the connection between the support rod 5 and the upper push rod 1 is located at the lower part of the lower rod 12 . The lower part of the support bar 5 is rotatably connected with the rear wheel bracket 4 , the front part of the seat bar 6 is rotatably connected with the front wheel support 3 , and the rear part of the seat bar 6 is rotatably connected with the support bar 5 . The rotational joint between the seat post 6 and the front wheel bracket 3 is lower than the first rotational joint 7 . The rear wheel support 4, the lower push rod 2, the lower rod 12 and the support rod 5 form a four-bar linkage.

The locking device is installed at the second rotary joint 8 and can lock the upper push rod 1 and the lower push rod 2 to each other. The second rotary joint 8 formed by the intersection of the upper push rod 1 and the lower push rod 2 is equipped with a torsion spring. When the locking device is unlocked, the upper push rod 1 is driven by the torsion spring around the second rotary joint 8 to front flip. This makes it unnecessary to turn the upper push rod 1 manually when the upper push rod 1 is folded, and the upper push rod 1 can automatically turn forward under the action of the torsion spring and its own weight.

Described children's stroller also comprises unlocking mechanism, and described unlocking mechanism comprises traction rope 13 and unlocking belt 14, and described traction rope 13 is installed in the inside of described vehicle frame, and described traction rope 13 upper end stretches out vehicle frame and locks. The device is connected, and the lower end of the traction rope 13 stretches out from the vehicle frame and is connected with the unlocking belt 14. The unlocking belt 14 is located between the rear wheel brackets 4, and the lifting unlocking belt 14 can unlock the locking device through the traction rope 13.

When the vehicle frame is in the unfolded state, the front wheel bracket 3 and the rear wheel bracket 4 are mutually supported, the upper push rod 1 and the lower push rod 2 are stretched away from the front wheel 9, and the locking device will push the upper push rod 1 Locked with the lower push rod 2, the support rod 5 is erected obliquely between the lower push rod 2 and the rear wheel support 4, and the seat bar 6 is deployed between the front wheel support 3 and the support rod 5. The rotational connection between the support rod 5 and the lower rod 12 is lower than the second rotary joint 8 , and the connection between the support rod 5 and the rear wheel bracket 4 is lower than the connection between the support rod 5 and the seat rod 6 . The lower push rod 2 is substantially on the same straight line as the upper rod 11 , and the lower rod 12 is substantially on the same straight line as the support rod 5 .

When the vehicle frame is in the folded state, the locking device is unlocked, and the front wheel bracket 3, the rear wheel bracket 4, the upper push rod 1, the lower push rod 2, the support rod 5 and the seat rod 6 are all folded together.

When the unfolded stroller is folded, the unlocking belt 14 is pulled directly, and the unlocking belt 14 pulls the traction rope 13 to unlock the locking device. The unlocked upper push rod 1 turns forward around the second rotary joint 8 under the action of the torsion spring. -At the same time, the front wheel bracket 3 rotates around the first rotating joint 7 to the direction of the rear wheel bracket 4 under the action of its own gravity, and the front wheel bracket 3 rotates to push the seat bar 6 to move backward, and the seat bar 6 pushes the support bar 5 to move backward . Under the action of the four-bar linkage mechanism composed of the rear wheel bracket 4, the lower push rod 2, the lower rod 12 and the support rod 5, the support rod 5 drives the upper push rod 1 to move as a whole, and then drives the lower push rod 2 to move downward, and then The front wheel bracket 3, the rear wheel bracket 4, the upper push rod 1, the lower push rod 2, the support rod 5 and the seat rod 6 are all folded together to realize the folding of the stroller. It can be seen that the utility model realizes the function of carrying and folding the children's stroller, and the folding is simple and convenient, with few steps and no cumbersomeness.

To unfold the folded baby stroller, you only need to pull the upper push rod 1 to rotate around the second rotating joint 8, and the front wheel bracket 3, the rear wheel bracket 4, the lower push rod 2, the support rod 5 and the seat rod 6 are all It will be unfolded one by one, and finally the frame of the stroller can be locked by the locking device to realize the unfolding of the stroller.

As mentioned above, we have fully described according to the purpose of the utility model, but the utility model is not limited to the above-mentioned embodiment and implementation method. Practitioners in the relevant technical fields can make different changes and implementations within the scope permitted by the technical ideas of the present utility model.

Claims (8)

1. A stroller for children, comprising a frame with an unfolded state and a folded state, a front wheel (9) arranged at the front under the frame, a rear wheel (10) arranged at the rear under the frame, and a The locking device for locking the vehicle frame in deployment is characterized in that the vehicle frame includes a front wheel bracket (3) whose lower part is connected to the front wheel (9), a rear wheel bracket (4) whose lower part is connected to the rear wheel (10), Seat rod (6), push rod and support rod (5), the front wheel bracket (3) intersects with the rear wheel bracket (4) to form a first rotating joint (7), the front wheel bracket (3) and the rear wheel bracket (3) The wheel bracket (4) can rotate around the first rotating joint (7), the push rod includes an upper push rod (1) and a lower push rod (2), and the lower part of the lower push rod (2) is connected to the At the first rotary joint (7), the upper part of the lower push rod (2) intersects with the upper push rod (1) to form a second rotary joint (8), and the upper part of the support rod (5) meets the upper push rod ( 1) Rotational connection, the lower part of the support rod (5) is rotationally connected with the rear wheel bracket (4), the front part of the seat rod (6) is rotationally connected with the front wheel bracket (3), and the rear of the seat rod (6) part is connected to the support rod (5) in rotation, the locking device is installed at the second rotating joint (8) and can lock the upper push rod (1) and the lower push rod (2) to each other, when the frame is in the unfolded state , the front wheel bracket (3) and the rear wheel bracket (4) stand upright, the upper push rod (1) and the lower push rod (2) extend away from the front wheel (9), and the locking device will The upper push rod (1) and the lower push rod (2) are locked to each other, the support rod (5) stands obliquely between the lower push rod (2) and the rear wheel bracket (4), and the seat rod (6) is deployed on Between the front wheel bracket (3) and the support rod (5); when the frame is in the folded state, the locking device is unlocked, and the front wheel bracket (3), rear wheel bracket (4), and upper push rod (1) , the lower push rod (2), the support rod (5) and the seat rod (6) are all moved closer to each other and folded together. 2. The children's stroller according to claim 1, characterized in that: the second rotary joint (8) formed by the intersection of the upper push rod (1) and the lower push rod (2) is equipped with a torsion spring, when The locking device is unlocked, and the upper push rod (1) is turned forward around the second rotating joint (8) driven by the torsion spring. 3. The children's stroller according to claim 1, characterized in that: the children's stroller also includes an unlocking mechanism, the unlocking mechanism includes a traction cable (13) and an unlocking belt (14), and the traction cable (13) ) is installed inside the vehicle frame, the upper end of the traction cable (13) protrudes from the vehicle frame to connect with the locking device, and the lower end of the traction cable (13) protrudes from the vehicle frame to connect with the unlocking belt (14), the The unlocking belt (14) is located between the rear wheel brackets (4), and the locking device can be unlocked by pulling the unlocking belt (14) through the traction cable (13). 4. The stroller according to claim 1, characterized in that: the upper end of the front wheel bracket (3) intersects with the upper end of the rear wheel bracket (4) to form a first rotating joint (7), the The rotating joint between the seat bar (6) and the front wheel support (3) is lower than the first rotating joint (7). 5. The stroller according to any one of claims 1 to 4, characterized in that: the upper push rod (1) is composed of an upper rod (11) and a lower rod (12) fixedly intersected, and the lower push rod The second rotary joint (8) formed by the rod (2) and the upper push rod (1) is located at the intersection of the upper rod (11) and the lower rod (12), and the support rod (5) and the lower rod (12) Lower swivel connection. 6. The children's stroller according to claim 5, characterized in that: when the frame is in the unfolded state, the rotation connection between the support rod (5) and the lower rod (12) is lower than the second rotation joint (8) , the connection between the support rod (5) and the rear wheel support (4) is lower than the connection between the support rod (5) and the seat rod (6). 7. The stroller for children according to claim 6, characterized in that: the rear wheel bracket (4), the lower push rod (2), the lower rod (12) and the support rod (5) form a four-bar linkage mechanism. 8. The children's stroller according to claim 7, characterized in that: when the frame is in the unfolded state, the lower push rod (2) and the upper rod (11) are roughly on the same straight line, and the lower rod (12) ) and the support rod (5) are roughly on the same straight line.